It will be fun to see how this project turns out.
Assuming you've already seen both of these:
Cobra GolF Karts already exist:
But closer to this, Japanese "baby Cobras" running a turbocharged, 720cc mill with 158 horsepower. Don't know the scale, but kinda cool too. I'd like to see one next to a full size.
Only In Japan: Baby Cobra Replica Is A Rolling Cartoon
Only in Japan: World's most (only?) fuel efficient Shelby Cobra